Java html form math question?

@jalarieJan 27.2012 — #Java and JavaScript are totally different things. The names are similar to intentionally cause confusion. You want JavaScript.

Try this:

<i>
 </i>
 &lt;form method="post" action="javascript:void(0);"&gt;
 &lt;div class="form"&gt;
 &lt;label for="A"&gt;Item Price Ex Vat:&lt;/label&gt;
 &lt;input type="text" size="20" value="0" name="A" id="A" alt="price ex VAT" onfocus="this.select();" /&gt;
 &lt;br /&gt;
 &lt;label for="B"&gt;Item Price Inc Vat:&lt;/label&gt;
 &lt;input type="text" size="20" value="0" name="B" id="B" alt="price inc VAT" onfocus="this.select();" /&gt;
 &lt;br /&gt;
 &lt;label for="C"&gt;Volume Ordered&lt;/label&gt;
 &lt;input type="text" size="20" value="0" name="C" id="C" alt="volume ordered" onfocus="this.select();" /&gt;
 &lt;br /&gt;
 &lt;input type="button" value="Calculate" title="Submit" onclick="CalcIt();" /&gt;&amp;nbsp;
 &lt;input type="reset" value="Reset" title="Reset" /&gt;&amp;nbsp; 
 &lt;br /&gt;
 &lt;label for="D"&gt;Total Ex Vat:&lt;/label&gt;
 &lt;input type="text" size="20" value="0" name="D" id="D" alt="total ex Vat" onfocus="this.select();" /&gt;
 &lt;br /&gt;
 &lt;label for="E"&gt;Total Inc Vat:&lt;/label&gt;
 &lt;input type="text" size="20" value="0" name="E" id="E" alt="total inc VAT" onfocus="this.select();" /&gt;
 &lt;/div&gt;&lt;!-- form --&gt;
 &lt;/form&gt;

<i>
 </i>VAT=0.20;
 function CalcIt() {
 f1=document.forms[0];
 VA=f1.A.value;
 VB=f1.B.value;
 VC=f1.C.value;
 if (VB == 0) {
 VB=VA*(1+VAT*1);
 f1.B.value=VB;
 } else {
 VA=VB/(1+VAT*1);
 f1.A.value=VA;
 }
 VD=VA*VC;
 VE=VB*VC;
 f1.D.value=VD;
 f1.E.value=VE;
 return false;
 } // CalcIt

Java html form math question?

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Java html form math question?

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